Process of making plastic substances and product obtained



Patented Nov. 30, 1-931 UNITED srA Es PAT-EN rams;

" 'Pnocitss or MAKING PLASTIC SUBJ- vi 1 1 s'raNcEs'ANn rnonuc'r on'ranmn Joseph 0. Patrick, Trenton, N. J.

No Drawing.

, This is a continuation in part or my application, Serial No. 186,588, filed April-25, 1927. upon which Patent No. 1,996,486 was issued AprilZ,

I have found thata iactitious plastic substance may be produced by the treatment Oran olefin type hydrocarbon compound ;with an alkaline polysulfide. The hydrocarbon compoundis pref: erably present 'in'the form of its additive'compounds, such as, for example, the'halogen derivatives. The product obfiiined-by'such a method-is of a .very pale I color, of considerable tensile strength, good adhesion and cohesion values, high elasticity, and is capable of se'veralphysical con-- ditions as to pliability Within wide ranges of temperatures, impermeable to water and gases and.-

not afiected by many solvents,of,high dielectric value and-having a specific gravity'higher than that oi! water. Such products are not injured by boiling with dilute acids, alkalies, oroxidizing agents. In general, the material resembles rubber in physical properties but differs thereiirom in' its chemical constituency and stability.

A substance having additional desirable properties 'canbeproduced by the, incorporation of a metallic soap, preferably, but not necessarily, an

insoluble metallic soap,inintimate mixture with the substance described above, This incorporation may, for example,--be accomplished by the addition of a materialicontaining the radical of a'iatty acid or the fatty acid itself to the product either before or after the suliurizing' reaction: with the addition of a metallic base, so that the acid and the base unite to form soap within the material, In this way the finished plastic sub stance has an increased toughness and hardness, and constitutes a superior product which may be used inv different places or for diflerent purposes, such as a floor or root covering, impregnant for fabric, base material for tires, tubes, surgical articles usually made of rubber, and the like. The productis more receptive to the incorporation of pigments,'is more easily molded, and there is a very considerable increase,

in tensile strength.

The abilityv of certain solvents, such as carbon 7 disulfide, ior example, to disperse the new plastic substance can be utilized to maintain the dispersion in a less viscous condition, but such solvent can be evaporated oiI .from the product in forming the finished article.

In carrying out this invention, the derivatives obtained by the action of chlorine upon the permanently gaseous products that are obtained in the intensive cracking of petroleum hydrocar- Application :NOVCIDMI 14, 19:3, SerialNo. 752,945 g 4 claims (oi. zoo-s) ration occurs; ,and the solution is then diluted with watento adjust the specific gravity to sub- 10 'stantially' that of the halide oil; gallons of this calcium polysulfide solution is mixed with approximately 50 gallons of the halide oil. Re-

action occurs at ordinary temperatures, but is preferred to accelerate this reaction by heating 15 in'a reflux apparatushaving an agitator to a temperature slightly above the boiling point of the halide oil. A resulting product of at least 25 lbs. of plastic material is obtained, whiclris boiled with water to drive off occluded volatile 20 substances and compounds.

Twenty pounds of this plastic materiaL-gealculated on a dry basis, is placed in carbon disulfide and masticated. At the completion of the mastication or kneading, the mass should be 25 pasty and of about the consistency of a thick molasses. One pound of oleic acid is added and the kneading operation is continued until a thorough incorporation has occurredg Two pounds of litharge are then added and the kneading continued for thorough incorporation: during the course or such kneading a reaction occurs between parts of the litharge and the oleic acid to produce a soap,'lead oleate, which is insoluble and produces desirable changes in the plastic 35 material. The solvent is removed by evaporation.

The material may be mixed with filling materials such as asbestos fibre, fragments of cloth, sand, or dust, barium sulfate, fibre, etc., as well 40 as with other pigments to produce a desired color, or for other purposes, such as the mineral earth pigments, Venetian red, chrome green,

secticide and vermicide, and protects the material against the attacks of insect and vegetable parasites.

While oleic acid has been described as a material containing a fatty acid radical, it has been found that other fatty acids, such as stearic and linoleic acids, may be employed, as well as the fatty acids obtained from various oils, fats and waxes: and that the material may be added in the form of fatty glycerides. Radicals of one or more of the acids may be employed as desired.

2. A plastic comprising products of reaction between an alkaline polysulfide solution and organic compounds which consist of hydrocarbons of the olefin type obtained from cracked petroleum hydrocarbons that have been chlorinated, said chlorinated compounds having a giggling point between about 80 C. and about 3. A plastic comprising products of reaction between an alkaline polysulfide solution and products consisting of hydrocarbons of the olefin type obtained from cracked petroleum hydrocarbons that have been chlorinated that were gaseous before chlorination, said chlorinated products having a boiling point between about 80 C. and about 200 C.

4. A plastic comprising products of reaction between an alkaline polysulfide and products consisting largely of ethylene, propylene and butylene obtained from cracked petroleum hydrocarbons that have been chlorinated, said chlorinated products having a boiling point between about 80 C. and about 200 C.

JOSEPH C. PATRICK. 

